Spring tooth for cultivators



A. W. REYNOLDS.

SPRING TOOTH FOR CULTIVATORS.

APPLICATION FILED DEC. 8. 1920.

1 ,4]. 8, 1 73. I Y Patented May 30, 1922 gm +W ATTORNEYS ARTHUR REYNOLDS, Q13 NE-WTOXVN, CONNECTICUT.

SPRING TOOTH FOR CULTIVATORS.

Specification of LettersLPatent. Patented "Mm 3Q 19gg Application filed December 8, 1920. Serial No. 429,057.

To all whom it may concern:

Be it known that ARTHUR RnYNoLDs, a citizen of the United States, and resident of Newtown, in the county of Fairfield and State of Connecticut, has invented certaln new and useful Improvements in Spring Teeth for Cultivators, of which the following is a specification. r

This invention relates to new and useful improvements in spring teeth for Cultivators, harrows and the like, and which are of particular advantage in stony ground or where there are roots or other obstructions.

The object of the invention is to provide a novel and improved spring tooth standard of simple construction which, first, is adapted to be secured to a bar of the frame of a cultivator, harrow or the like in such manner that it will be firmly held against sidewise thrust; second, to provide a spring tooth that will hold the steel directly under the cultivator bar in approximately the same position as it would be held by the usual type of rigid standard; third, is capable of adjustments upon its bar to position the pointvof its steel either forwardly or rearwardly with respect to the bar, and to position the forward face of its steel blades so that it is arranged at either a right or an oblique angle to the direction of operating movement of thecultivator upon which the tooth is carried, as may be desirable; and fourth, is provided with means to engage the two springs of the tooth to adjustably and effectually hold the steel thereon. v In the accompanying drawing forming part of this specification,

Fig. 1 is a side elevation of the spring tooth suggesting by dotted lines how the steel can be adjusted forwardly;

Fig. 2 is a rear view thereof;

Fig. 3 is a top plan view, showing the two round springs partially in section and partially broken away; r

Fig. 4; is a side elevation showing one of the pair of double round springs forward of the other to position the front face of the steel at an oblique angle with respect to the direction of movement of the bar by which the spring tooth is supported;

Fig. 5 is a top plan View of the spring tooth as when adjusted as disclosed in Fig. 4, showing the two round springs partially in section and partially broken away; and

Fig. 6 is a cross sectional view on line 66 of Fig. 2.

e in the drawing, 10 denotes a bar of& cultivator, harrowi or the like, which is adapted to extend longitudinally so that its length will be arranged in the direction of movement of said implement. This bar may be of the straight or crooked type and is adapted to support the spring tooth of my invention, and for that purpose is provided with a pair of holes, 11, see Fi s. 3, and 5, which are arranged at suitable distances apart.

Numeral 12-denotes a pair of plates of like construction adapted to be adjustably secured to opposite sides of the bar as by means of removable bolts 13 entering either of the notched openings llarr'anged ltransversely at the opposite ends of each. plate and passingthrough the holes 11 of the bar. 15 denotes nuts adapted to fasten the bolts, plates and bar to each other in the manner indicated. The plates are provided intermediate their ends with transversely arranged grooves 16 which are preferablyproduced by properly bending the plates, as will be un derstoo'd, and are adapted to receive the end portions, denoted by 17, of the pair of springs, said springs being preferably circular in cross section. As will be seen, the end portions "of the springs which lie in the grooves are straight and are normally .po-

sitioned vertically therein, and the portion of each spring just below the groove, denoted by numeral 18, is curved forwardly, is then curved upwardly as denoted by numeral 19 and then rearwardly, as denoted by numeral 21). and then further disposed downwardly as denoted by numeral 21. The lower ends of the springs carry a steel 22 of ordinary or preferred construction in a manner now to be explained. In the drawing I have shown a common form of steel that is secured to the lower end portions of the springs by a short bolt 23 having a thread 23. 24 denotes a clamp having a hole adapted to receive the short bolt, and having wings 25 adapted to engage the rounded springs, and 26 denotes a nut positioned upon the'thread of the short bolt to hold the clamp in engagement with the springs. Wings 25 are of such configuration that when the nut is screwed down to secure the springs between the blade and clamp, the springs are at the same time forced against the short bolt as will be understood. It will be obvious that the steel can be fastened at any desired elevation on the springs.

It will now be evident that when the end portions 17 of the pair of separate springs are positioned in the grooves of the plates 12 secured to the bar shown, the forward portions 19 of the springs will be in engagement with the opposite sides of the bar as denoted by the numeral 27 and the rear portions of the springs 21' will also, when the bar is straight, be in engagement with the opposite sides of the bar as denoted by the numeral 28 as clearly shown in Figs..3 and 5 and the steel carried on the springs will thus be firmly held against sidewise thrust. That is to say, the upper end of each spring will be held fast to the barand their forward and rearward portions will be in firm engagement therewith, and with one spring arranged upon each side of said beam the steel will be better supported against sidewise thrust.

It will be noted that the transverse groove in each plate 12 is not at the inidlength of the plate, but is arranged at one side of said midlength. Referring more especially to Figs. 1 and 5,.it will be seen that in these figures the position. of one of the plates, viz, the one at the top in Fig. 5 and the one to the rear in Fig. 4, has been reversed. That is, the plate has been turned end for end so that the groove in the plate on the far side is positioned forward of the groove in the plate on the near side. The resultaccomplished is the locating of one of the rounded springs forwardly of the other one, so that the forward face of the blade will be positioned at an oblique angle with respect to the direction of movement of the bar instead of at approximate right angles thereto as is the condition, see Figs. 1 and 3, in the case when the springs are arranged directly opposite each other.

In Fig. 1 I have suggested how the point of the blade can be adjusted forwardly or rearwardly with respect to the bar- In said figure the full lines disclose a blade normally positioned, as when the bolts enter the central portions of the openings 114- at the opposite ends of the plates. The dotted lines disclosed would represent the forward bolt positioned through the lower enlargement of the openings 14 to raise the front ends of the plates to tilt the lower ends of the springs forwardly. From this brief description it will be evident that the bolts can be arranged in either the upper or lower portions of the openings in the ends of the plates to tilt the latter, together with the tooth, at any desired forward or rearward the pair of springs to said bar either side by 9 side or one forward of the other.

2. A spring tooth of the character described comprising a pair of separable and parallel shaped springs adapted tobe ,secured to a bar of a cultivator, and means for securing said springs to the bar either side by side. or one forward of the other as preferred. v

3. A spring tooth of the character described, comprising a pair or separable springs adapted to be secured to a bar of a cultivator, a steel attached to the lower endportions of said springs, and means for securing said springs'to the bar either side by side, whereby the steel will be positioned at approximate right angles to the line of movement of the bar, or one forward of the other, whereby the steel will be positioned at an oblique angle to said line of movement.

4. A spring tooth of the character described, comprising a pair of plates each provided with a transverse groove and adapted to be secured toopposite sides of a bar, and a pair of springs having their upper ends arranged in said grooves and against said bar, the portions of said springs extending beneath said grooves being curved forwardly, thence upwardly, thence rearwardly, and thence downwardly, forward and rearward portions of both of said springs being in engagementwith saidbar, whereby sidewise thrustupon said springs will be supported by said bar.

5. A spring tooth of the character described, comprising a ,pair of plates each provided with a --transversegroove and adapted to be secured to opposite sides of a bar, each transverse groove being arranged at a point at one side of the midlength of its plate and a pair of springs having their upper ends arranged in said grooves and against opposite sides of said bar, forward portions of said springs engaging opposite sides'of the bar, whereby said plates can be arranged to position said grooves opposite each other, or to position one of said grooves forwardly or rearwardly of the other. i i

6. A spring tooth of the character described, comprising a pair of plates adapted to be secured to opposite sides of a bar having holes, each of said plates provided with a series of aligned transversely arranged holes adjacent its opposite ends and with a transverse groove intermediate of said holes and at unequal distances therefrom, a pair of springs having their upper ends arranged in said transverse grooves and against said bar, forward and rearward portions of said springs engaging opposite sides of said bar, and means adapted to pass through said holes of said bar and through any desired holes in the opposite ends or said plates to arrange the lower portions of said springs at any forward or rearward positions with respect to said bar.

7. A spring tooth of the character described, comprising a pair of parallel springs, means whereby the same may be supported either side by side or one forward of the other, a steel, a bolt extending therefrom, a plate having an opening to receive said bolt and provided with wings adapted to engage said springs, and means for forclng said plate toward said steel and for forcing said wings against said springsv when the same are either side by side or arranged one forward of the other.

8. A spring tooth of the character described, comprising a pair of parallel springs, means for supporting the same, a

State of Connecticut this 6th day of De- ARTHUR W. REYNOLDS. Witnesses:

LILLIAN M. ALLING,

O. M. NEWMAN.

cember, A. 

